Write word and chemical equations for the following: a) Sodium reacts with chlorine to form sodium chloride
b) Carbon burns with oxygen to form carbondioxide
c) Iron reacts with sulphur to form iron sulphide
d) Calcium carbonate decomposes to form calcium oxide
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Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which type of fossil does this image depict?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled